Product Details
The ZZ454/440 offers tremendous value in a big-blockcrate engine. Based on the proven 454 HO with its Gen VI454 block, the addition of GM Performance Parts Signatureseries aluminum heads reduce weight and increasehorsepower to 440, up from the 454 HO’s 425.
The ZZ454 shares its forged crankshaft and connectingrods with GMPP’s 454 HO and the family of famous 502crate engines, so you know it’s strong. Forged pistons fillthe block, and a steel roller camshaft times the valves.Complete with dual plane intake manifold, water pump,torsional damper and automatic transmission flexplate, theZZ454 is one value packed big-block crate engine.
With its throttle responsive 9.6 to 1 compression ratio, thepump gas friendly ZZ454 is a great choice for muscle cars,bracket racers and off-road truckers. Just add your 850CFM carb, GM HEI distributor, and 2 1/4" primary headersand you’re ready to rip.
The ZZ454/440 in intended for use in 1978 and earlier preemissionstreet vehicles and any year off-road vehicles. Equipped oil pan may not clear Chevelle and Camaro applications.
Specification
ZZ454-440 Tech Specs
Part Number: 19331574
Engine Type: Chevy Big-Block V-8
Displacement (cu. in.): 454
Bore x Stroke (in.): 4.250 x 4.000
Block (P/N 19170538): Cast-iron with four-bolt main caps
Crankshaft (P/N 14096983): Forged steel
Connecting Rods (P/N 19170198): Forged steel
Pistons (P/N 10215228): Forged aluminum
Camshaft Type (P/N 24502611): Hydraulic roller
Camshaft Lift (in.): .510 intake / .540 exhaust
Camshaft Duration (@.050 in.): 211° intake / 230° exhaust
Cylinder Heads (P/N 12363392): Aluminum oval port; 110-cc chambers
Valve Size (in.): 2.190 intake / 1.880 exhaust
Compression Ratio: 9.6:1
Rocker Arms (P/N 12368082): Stamped steel
Rocker Arm Ratio: 1.7:1
Water Pump (P/N 19168606): Cast-iron, long-style
Flexplate (P/N 10185034): 14"
Recommended Fuel: Premium pump
Ignition Timing: 36° Total @ 4,000 rpm
Maximum Recommended rpm: 5500
Balanced: External
